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client/src/pages/TutorialTasks.tsx

@@ -989,8 +989,8 @@ const TutorialTasks: React.FC = () => {
 
       if (response.status === 200) {
   
-        // Optimistic removal (disabled on Safari to prevent multi-phase jumps)
-        if (taskId && !isSafari) {
+        // Optimistic removal to keep UI in sync immediately (Safari skips refetch)
+        if (taskId) {
           setUserSubmissions(prev => {
             const list = prev[taskId] || [];
             const next = list.filter(s => s._id !== submissionId);